A man was killed while driving his Mercedes in Milton Keynes on Saturday.
The grey C220 left the road and came to rest on the barriers in Alston Drive, Bradwell Abbey, opposite the Lexus Garage off the H3 Monks Way between 10.15am and 10.30am.
The 50-year-old driver was taken to Milton Keynes General Hospital, but was later declared dead.
Investigating officer, PC Ian Baldock of the Roads Policing Department said: “I would like to appeal to anyone who witnessed the collision, or saw the Mercedes vehicle prior to the collision travelling in the Bradwell Abbey Industrial Estate to contact me via the Thames Valley Police Enquiry Centre on 101.
“Alternatively, if you don’t feel comfortable speaking to the police then you can contact the independent charity Crimestoppers anonymously on 0800 555 111 or online at www.crimestoppers-uk.org.
No personal details are taken, information is not traced or recorded and you will not go to court.”